The bell smart home battery pack is the perfect addition to your security & control panel that provides you with long lasting secure power. This battery pack can be used as a replacement for your existing battery. Features voltage: 6 volts capacity: 3. 1ah rechargeable sealed lead acid alarm battery replacement battery for: honeywell gsm, gsmvcn4g, gsmxcn4g, lte-xc includes instructions for the installation of your bell smart home devices